本文選題：塔式太陽能輔助燃煤發(fā)電 + 耦合機(jī)理　； 參考：《華北電力大學(xué)(北京)》2017年博士論文

【摘要】：電力是社會發(fā)展的支柱,是國民經(jīng)濟(jì)的命脈之一。我國燃煤發(fā)電量占全口徑發(fā)電量的70%左右,因此燃煤電站是我國電力行業(yè)乃至整個工業(yè)領(lǐng)域節(jié)能降耗的關(guān)鍵研究對象。我國燃煤發(fā)電技術(shù)已經(jīng)達(dá)到世界先進(jìn)水平,要想在現(xiàn)有燃煤發(fā)電技術(shù)基礎(chǔ)上進(jìn)一步節(jié)能減排,外部清潔能源成了重要突破口。太陽能熱發(fā)電技術(shù)是利用聚焦太陽能熱產(chǎn)生高溫高壓蒸汽進(jìn)入汽輪機(jī)做功發(fā)電,這一發(fā)電原理與燃煤發(fā)電技術(shù)相似,且已得到商業(yè)化利用。太陽能輔助燃煤發(fā)電系統(tǒng)(簡稱:光煤互補(bǔ)發(fā)電系統(tǒng))就是將太陽能熱發(fā)電技術(shù)和燃煤發(fā)電技術(shù)相融合,利用太陽能熱替代燃煤電站部分熱源,達(dá)到降低煤耗或增大發(fā)電量的目的;通過太陽能熱共享燃煤電站發(fā)電子單元,達(dá)到降低發(fā)電成本的目的;借助燃煤電站大容量、高參數(shù)和高穩(wěn)定性等特點平抑外部不穩(wěn)定太陽輻射資源對太陽能熱發(fā)電過程的擾動,達(dá)到電能穩(wěn)定輸出的目的。本課題以塔式太陽能輔助燃煤發(fā)電系統(tǒng)為研究對象,探索塔式太陽能熱與燃煤電站的耦合機(jī)理和熱力特性,通過建模仿真對塔式太陽能輔助燃煤發(fā)電系統(tǒng)進(jìn)行定量評價分析。課題開展的主要工作和取得的研究結(jié)論如下:首先,通過對塔式/槽式太陽能輔助燃煤發(fā)電系統(tǒng)和燃煤發(fā)電系統(tǒng)傳熱分析,分別建立各系統(tǒng)靜態(tài)/動態(tài)數(shù)學(xué)仿真模型,并驗證模型的準(zhǔn)確性及其在不同外部太陽輻射條件和電網(wǎng)電力調(diào)度等擾動下的靜態(tài)及動態(tài)運行特性,再將太陽集熱場系統(tǒng)和燃煤發(fā)電系統(tǒng)相集成,得到太陽能輔助燃煤發(fā)電系統(tǒng)模型,為后續(xù)研究提供模型基礎(chǔ)。其次,對塔式太陽能輔助燃煤發(fā)電系統(tǒng)進(jìn)行傳統(tǒng)?和先進(jìn)?分析,研究互補(bǔ)系統(tǒng)的?損耗分布及成因,為課題的開展指明研究方向�；パa(bǔ)系統(tǒng)各部件自身的?損耗遠(yuǎn)大于系統(tǒng)結(jié)構(gòu)造成的?損耗,應(yīng)先重點提高部件自身的熱力性能降低自身?損耗,再優(yōu)化外部系統(tǒng)結(jié)構(gòu),降低系統(tǒng)耦合結(jié)構(gòu)對部件?損耗的影響;互補(bǔ)系統(tǒng)節(jié)能應(yīng)主要從鍋爐和塔式太陽集熱場入手,通過降低鍋爐和太陽集熱場運行換熱溫差減少其?損耗,從而提高互補(bǔ)系統(tǒng)發(fā)電的?效率。再次,構(gòu)建塔式太陽能輔助燃煤發(fā)電系統(tǒng)太陽能貢獻(xiàn)度評價方法,同時利用夾點分析和?分析方法對塔式太陽能熱與燃煤電站的耦合方案進(jìn)行歸類、預(yù)判和評價,得出最優(yōu)耦合方案。對該最優(yōu)耦合方案系統(tǒng)進(jìn)行年變工況運行熱力特性分析,研究該互補(bǔ)系統(tǒng)在外部太陽直射輻射、電網(wǎng)電力調(diào)度和工質(zhì)參數(shù)變化等擾動下的動態(tài)運行特性,并驗證該最優(yōu)耦合方案選取的正確性,為塔式太陽能輔助燃煤發(fā)電系統(tǒng)最優(yōu)耦合方案的選取提供一種擇優(yōu)方法。最后,利用商業(yè)電站實際采用的財務(wù)分析模型和互補(bǔ)電站全生命周期運行熱力參數(shù)對塔式太陽能熱與燃煤互補(bǔ)發(fā)電站進(jìn)行財務(wù)分析,包括投資情況和收益情況等。對比塔式太陽能輔助燃煤發(fā)電站與單獨太陽能熱發(fā)電站和燃煤電站在財務(wù)方面的優(yōu)勢,并從發(fā)電成本的角度為光煤互補(bǔ)發(fā)電站上網(wǎng)電價政策的制定提供數(shù)據(jù)參考。
[Abstract]:Power is the backbone of social development and one of the lifeblood of the national economy. Coal power generation in China accounts for about 70% of the total power generation, so coal-fired power plants are the key research objects for energy saving and consumption reduction in the electric power industry and even the whole industrial field. On the basis of the operation, the energy saving and emission reduction and the external clean energy have become an important breakthrough. The solar thermal power generation technology uses the focused solar energy to generate the high temperature and high pressure steam into the steam turbine, which is similar to the coal-fired power generation technology and has been commercialized. The complementary power generation system is a combination of solar thermal power generation technology and coal-fired power generation technology, using solar heat to replace part of the heat source of coal-fired power plants, to reduce coal consumption or increase the power generation capacity. Through solar heat sharing coal power plant electronic units to reduce the cost of electricity, with the aid of large capacity and high parameters of coal-fired power stations. This subject takes the tower type solar assisted coal-fired power generation system as the research object, and explores the coupling mechanism and thermodynamic characteristics of the tower type solar heat and the coal-fired power plant, and through modeling and simulation to the tower. The main work of the project and the results obtained are as follows: first, through the analysis of the heat transfer of the tower / groove solar assisted coal-fired power system and the coal-fired power generation system, the static / dynamic mathematical simulation models of each system are established respectively, and the accuracy of the model is verified and the results are verified. It has the static and dynamic running characteristics under the disturbance of different external solar radiation conditions and power grid power dispatching, and then integrates the solar collector system with the coal-fired power generation system, and obtains the model of the solar assisted coal-fired power generation system, which provides the model foundation for the follow-up research. Secondly, the traditional tower type solar auxiliary coal-fired power generation system is traditional. And advanced? Analysis, study the loss distribution and cause of the complementarity system, and point out the research direction for the development of the subject. The loss of the components of the complementary system is far greater than that of the system structure. The thermal performance of the component itself should be improved to reduce the loss, optimize the external system structure, and reduce the coupling structure of the system. The energy saving of the complementary system should be mainly from the boiler and the tower type solar collector field, reducing the loss by reducing the heat transfer temperature difference between the boiler and the solar collector, thus improving the power generation efficiency of the complementary system. Thirdly, the evaluation method of solar contribution degree of the tower type solar assisted coal-fired power system is constructed, and the use clip is used simultaneously. The method of point analysis and analysis is used to classify the coupling scheme of the tower type solar energy heat and the coal-fired power plant. The optimal coupling scheme is obtained and the optimal coupling scheme is obtained. The thermodynamic characteristic analysis of the optimal coupling system is carried out for the operation of the external solar radiation, the power dispatching of the power grid and the change of the parameters of the working material. The dynamic characteristics of the dynamic operation are verified and the correctness of the optimal coupling scheme is verified. It provides an optimal method for the selection of the optimal coupling scheme for the tower type solar assisted coal-fired power generation system. Finally, the financial analysis model used by the commercial power station and the thermodynamic parameters of the full life cycle of the complementary power station are used for the tower type solar heat. The financial analysis of the coal-fired power station, including the investment situation and the income, compares the advantages of the tower type solar auxiliary power plant with the single solar thermal power plant and the coal-fired power plant, and provides the data reference for the formulation of the electricity price policy of the coal complementary power station from the angle of generation cost.

【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2017
【分類號】：TM61

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 楊勇平;朱勇;翟融融;;塔式太陽能輔助燃煤發(fā)電系統(tǒng)太陽能貢獻(xiàn)度研究[J];華北電力大學(xué)學(xué)報(自然科學(xué)版);2016年03期

2 王利剛;吳令男;徐鋼;董長青;楊勇平;;大型燃煤蒸汽動力發(fā)電機(jī)組熱力系統(tǒng)內(nèi)能耗作用的計算與應(yīng)用分析[J];中國電機(jī)工程學(xué)報;2012年29期

3 王利剛;楊勇平;董長青;徐鋼;;單耗分析理論的改進(jìn)與初步應(yīng)用[J];中國電機(jī)工程學(xué)報;2012年11期

4 宿建峰;李和平;，

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